The "matching" hats problem is a classic exercise in probability: if "n" people throw their hats in a box, and then each person randomly draws one out again, what is the expected number of people who draw their own hat? This paper presents several extensions to this problem, with solutions that involve interesting tricks with iterated…

In a recent article, Iain MacInnes analyzed the static equilibrium of a system consisting of a wine bottle and a wine butler. After discussing that composite system, students can be asked to consider only the bottle (and its contents) as the system. An interesting challenge for them is to describe the forces on the bottle in static equilibrium.

The development of experimental functional analysis and more recently functional analysis checklists have become common technologies for evaluating antecedent events and the consequences of problematic behaviors. Children and developmentally disabled persons across the life span with challenging behaviors have been the primary focus of this…

Psychology has largely ignored the distinction between constructs and events and what comprises a scientific construct, yet this distinction is basic to some of the major divisions of thought within the discipline. Several kinds of constructs are identified and compared with events, and improper use of constructs is noted of which the mind…

A puzzle was developed as a resource for teaching intermediate chemistry students where they need to use general intelligence and logic skills. The puzzle involves identification of name, age, subdiscipline of chemistry and position of 6 students around the table by using certain data provided to them.

This article describes the use of Fermi questions as a problem-solving tool.

As is known, a semi-magic square is an "n x n" matrix having the sum of entries in each row and each column equal to a constant. This note generalizes this notion and introduce a special class of block matrices called "block magic rectangles." It is proved that the Moore-Penrose inverse of a block magic rectangle is also a block magic rectangle.

This article describes an experiment using a novel gasometric assembly to determine the thickness and number of atomic layers of zinc coating on galvanized iron substrates. Students solved this problem through three stages. In the first stage, students were encouraged to find a suitable acidic concentration through the guided-inquiry approach. In…

This article describes an exploratory study of question prompts and online mentoring (specifically a lateral or peer mentoring experience) in a field-based practicum that focused on teaching ill-structured problem solving of classroom discipline. Data were gathered on 26 in-service practicum teachers through online observations, online journal…

Many years of experience make it difficult to believe that survey answers are mostly unambiguous. For example, by going through accessible studies, a lot of problems concerning memory can be identified in the field of living conditions and in other domains. Consequently, it may be claimed that facts are seldom stored in an easily accessible…

The relationship status of study participants (e.g., daters, cohabitors, marrieds, or unmarrieds) has implications for understanding dating and mate selection. Procedures used in studies may blur or ignore status distinctions. The authors examined methods used in 791 studies published from 1991-2001. Most commonly, status of participants is…

This is a report on help-seeking behavior among a diverse sample of 451 black adults residing in Richmond, Virginia. The report defines "help-seeking behavior" as any communication about a problem or troublesome event that is directed toward obtaining support, advice or assistance in times of distress. The use of two types of…

The phenomenon of minimum competency testing (MCT) is explored, beginning with its origins in public concern for educational accountability. Three major themes appearing in the states enacting prescriptive legislation are described: state standards/state test (Florida); state standards/local test (Oregon); and local standards/local test…

Social science researchers and policy makers are not oriented toward supporting one another or sharing information that might be useful in solving social problems. Only recently have public funding agencies supported social science communication research; previously such funding came through private agencies. It seems likely that funds will…

A drug abuse education program was implemented in grades five, seven, and nine in the Baltimore City Public Schools. Unit plans outline the curriculum content and learning activities for each of the three grades. The major objective in grade five is to familiarize pupils with various medically used drugs and to develop an understanding that they…